Network Engineer, Level 3 Jobs

What You Will Do:

At Independent Software, as a Network Engineer Level 3, you will design, implement, and support enterprise network infrastructure across complex environments using Cisco and Arista technologies. In this role, you will help optimize network performance, support secure communications, and ensure compliance with SSP and STE/STN requirements while working alongside engineering teams to maintain reliable, scalable network operations.

This role offers hands-on work with modern networking technologies, performance optimization, and infrastructure modernization initiatives. Some travel may be required, and participation in on-call operational support is expected.

Key Responsibilities:

Configure, deploy, and sustain Cisco and Arista network infrastructure

Support LAN, CAN, and WAN environments including performance optimization and troubleshooting

Apply SSP compliance and STE/STN security requirements to network devices

Design and implement network solutions including VPNs, firewalls, load balancing, VoIP, NAT, IPSec, and GRE tunneling

Monitor network performance, minimize latency, and optimize data throughput

Support network upgrades, cutovers, and infrastructure modernization efforts

Maintain network documentation, diagrams, and accreditation requirements

Collaborate with system engineers, users, and operations teams to resolve network issues

Provide guidance to junior engineers and support operational continuity

Required Skills and Qualifications:

Significant experience with Cisco and Arista configuration, deployment, and sustainment

Experience supporting enterprise LAN, CAN, and WAN networking environments

Familiarity with LatteArt and applying SSP, STE, and STN compliance requirements to network devices

Strong understanding of network security, routing, switching, and performance optimization

Experience with network protocols and technologies including VPNs, VoIP, IPSec, NAT, GRE tunneling, and traffic shaping

Ability to troubleshoot complex network and infrastructure issues in mission-critical environments

Willingness to travel as needed and participate in on-call operational support

Strong collaboration, communication, and technical documentation skills

Education and Experience:

Master's degree in Computer Science, Information Assurance, Information Security Systems Engineering, or a related discipline from an accredited college or university and ten (10) years of relevant professional experience providing Network Engineering support; OR

A Bachelor's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline from an accredited college or university and twelve (12) years of relevant professional Network Engineering experience; OR

Sixteen (16) years of relevant professional Network Engineering experience in lieu of a degree, along with an industry-recognized certification such as Arista Configuration Essentials, Cisco Certified Network Associate (CCNA), or a Juniper Certification Track (Automation & DevOps, Cloud, Data Center, Design, Enterprise Routing and Switching, Junos Security, or Service Provider Routing and Switching).

Certifications:

DoD Information Assurance Technical (IAT) Level III baseline certification required in accordance with DoD -M

Clearance Requirement:

Must possess an active TS SCI with appropriate Polygraph to be considered for this role

Why Choose Independent Software:

At Independent Software, our people are the mission. We've built a company around collaboration, integrity, and innovation and we make sure our team has the tools and support to grow, succeed, and thrive.

When you join us, you will:

Support critical national security missions that matter

Be part of a close-knit, employee-first culture where your voice is heard

Expand your skills through ongoing training, mentorship, and career development

Enjoy competitive compensation, generous benefits, and work-life balance

Ready to take the next step in your career? Join us and be part of something bigger.

Apply today.

We're an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status